Anatomical Studies of the Neotropical Cyatheaceae. I. Alsophila and Nephelea

Lucansky, Terry W.

doi:10.2307/1546921

Cited by 5 publications

(1 citation statement)

References 8 publications

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“…Most living members of the squamate cyatheoids are anatomically similar to O. banksii but can be distinguished from it principally by their leaf traces being formed of a series of traces and their possessing dermal scales rather than hairs (Ogura 1927(Ogura , 1938. Metaxya and Lop!wsoria, also of the Cyatheaceae (Lucansky 1974a(Lucansky , 1982, are similar to the fossil but differ from it mainly in their lack of medullary bundles.…”

Section: Comparisons and Discussionmentioning

confidence: 70%

Oguracaulis banksii gen. et sp. nov., a mid-Mesozoic tree-fern from Tasmania, Australia

Tidwell¹,

Nishida²,

Webster³

1989

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Oguracaulis banksii gen. et sp. nov. is described from permineralised specimens from Upper Jurassic-Lower Cretaceous strata near Ida Bay, Tasmania. The specimens consist of large fem stems and adhering petiole bases covered with thick root mantle. Their stems are characterised by a dictyostele with a sclerenchymatous sheath, numerous medullary bundles, an undivided leaf and petiolar vascular trace and multicellular epidermal hairs. This fossil fern provides evidence for the common origin for many of the modern cyatheaceous tree ferns including the cibotioids.

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Section: Comparisons and Discussionmentioning

confidence: 70%

Oguracaulis banksii gen. et sp. nov., a mid-Mesozoic tree-fern from Tasmania, Australia

Tidwell¹,

Nishida²,

Webster³

1989

PPRST

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Anatomical Studies of Cyathea and Trichipteris (Cyatheaceae)

Lucansky

1977

American J of Botany

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Comparative anatomical studies of the mature stems of two species each of Trichipteris and Cyathea (Cyatheaceae) are described. The outermost boundary of the stem is typically a two‐layered hypodermis. Mucilage‐sac cells are randomly distributed in all parenchymatous areas of the stem and form articulated laticifer systems. Localized areas of sclerenchyma tissue occur in the cortex of both T. microphylla and C. suprastrigosa. All species studied possess medullary bundles, whereas cortical bundles are found only in T. trichiata. Accessory bundles occasionally are associated with indentations in the internal stelar sheath of T. trichiata. The stelar pattern in each genus is a dictyostele and consists of individual meristeles. Distinctive cubical cells typically occur wherever sclerenchymatous fibers and parenchyma cells abut one another. Tangential cells occur within the primary phloem of each meristele, and occasionally within the larger accessory bundles. The primary xylem of the adventitious roots is typically diarch, although triarch and tetrarch xylem may occur. Leaf traces and petiole strands are similar anatomically to the accessory bundles. Based upon this study Trichipteris and Cyathea show striking anatomical similarities, and appear to be closely‐related taxa.

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Structure and affinities of the petrified plants from the Cretaceous of Japan and Saghalien, V. Tree fern stems from Hokkaido,Paracyathocaulis ogurae gen. et comb. nov. andCyathocaulis yezopteroides sp. nov.

Nishida

1989

Bot Mag Tokyo

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Anatomical Studies of the Neotropical Cyatheaceae. I. Alsophila and Nephelea

Cited by 5 publications

References 8 publications

Oguracaulis banksii gen. et sp. nov., a mid-Mesozoic tree-fern from Tasmania, Australia

Oguracaulis banksii gen. et sp. nov., a mid-Mesozoic tree-fern from Tasmania, Australia

Anatomical Studies of Cyathea and Trichipteris (Cyatheaceae)

Structure and affinities of the petrified plants from the Cretaceous of Japan and Saghalien, V. Tree fern stems from Hokkaido,Paracyathocaulis ogurae gen. et comb. nov. andCyathocaulis yezopteroides sp. nov.

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